The maps above show the arrangements of Earth's continents and oceans 65 million years ago and at present. Based on the maps, OA.
the Atlantic Ocean basin has decreased in size over the last 65 million years.
OB
the position of Australia has not changed over the last 65 million years.
OC.
South America has moved over the last 65 million years, but North America has not.
OD
the Pacific Ocean basin has decreased in size over the last 65 million years.

g1

choices:

a. g2. b. g1. c. m

cell division has two checkpoints namely, g1

checkpoint and spindle assembly checkpoint. the checkpoint which determines if

division has properly occurred is the g1 checkpoint. at this point, is a damage

in the dna is detected or  the has not reach the optimum size, the cell is

stopped in g1 and is not allowed to proceed to further process.

source:

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.